"Evi Technologies in Cambridge was sold to Amazon and now powers Alexa, the voice-activated speaker," Alex Macpherson, chief executive of Octopus Ventures, told the FT. "We also backed Swiftkey which went to Microsoft last year [for $250 million; £200 million] and made a seed investment in Magic Pony, which went to Twitter [for $150m; £120 million].

"We have expertise in the machine-learning field, but the challenge today is pretty much every business that comes through to us is machine learning or artificial intelligence."